New Insights into the Relationship Between Poincare Plot Geometry and Linear Measures of Heart Rate Variability
MELBOURNE UNIV PARKVILLE (AUSTRALIA)
Pagination or Media Count:
The Poincare plot is an emerging Heart Rate Variability HRV analysis technique, the geometry of which has been shown to distinguish between healthy and unhealthy subjects in clinical settings. The Poincare plot is able to display nonlinear aspects of the interval sequence and is therefore of interest in charactering the nonlinear aspects of HRV. The problem is, how do we quantitatively characterize the geometry, of the plot to capture useful descriptors that are independent of existing HRV measures In this paper, we investigate a popular existing category of techniques and show that they measure linear aspects of the intervals which existing HRV indices already specify. The fact that these methods appear insensitive to the nonlinear characteristics of the intervals is an important finding because the Poincare plot is primarily a nonlinear technique.
- Anatomy and Physiology